Well, I am just in the middle of moving into a new home, so do not have my main machine up and running yet (using a laptop ATM). My PC is not terribly high spec and I was considering whether or not to upgrade the motherboard and CPU, but decided to just make the best of what I have for now and just upgraded the RAM to 16 GB of faster DD3 and bought an FX-8370 with Wraith Cooler, which is the best one I can use with my current motherboard.
Actually, in many ways my new laptop is actually better, it is a Dell XPS running a 7th gen i7, but I have not tried any ArmA stuff on it yet.
I also bought another SSD, this time a Samsung 850 EVO 500 GB so will use that specifically for Steam and ArmA stuff, to complement the SSD I am already using for my system C: drive.
As for ArmA CWA, I have had a lot of fun working through it all. I have worked through all the campaign and standalone missions and even though the graphics, etc. are limited I loved doing all the OFP stuff again. Later on I will work through my collection of old hard drives to find the stuff for a (rather overambitious) mission that I was working on many years ago. I am determined to finish it, even if nobody else ever plays it except me!
At least I am retired, so can find some time to play. It is amazing how many things I have to do during each day and I wonder how I ever found time to work for all those years